the intent, according to canadian authorities, was to disrupt the economies. fox business network's petitioner barnes is here. really important trading partner, canada is, this could be a real blow. >> that's right. canada is our single largest trading partner. $600 billion a year in two-way trade. we get a lot of energy out of canada, natural resource. we ship a lot of finished goods north to canada, and by blowing up a bridge and a train would require, of course, authorities to go out and check every single bridge and train between the united states and canada. we know of at least two dozen international bridges and tunnels that are idea for commerce between the two countries. >> shepard: peter barnes. thank you. the authorities just announced at the news conference the suspects will appear in court in toronto tomorrow. robert mcfadden is back with us. former counterterrorism official. a lot of work be done. >> intriguing things from the beginning. the term al qaeda associated. that's always a very important to figure out what that means. the al qaeda pakist